diff --git a/bot/retrievers/custom_retriever.py b/bot/retrievers/custom_retriever.py
index 046842e..46147ac 100644
--- a/bot/retrievers/custom_retriever.py
+++ b/bot/retrievers/custom_retriever.py
@@ -51,7 +51,7 @@ def _build_node_list_from_query_result(
             score: float | None = None
             if query_result.similarities is not None:
                 score = query_result.similarities[ind]
-            
+
             if score is not None and score >= RETRIEVER_THRESHOLD:
                 # This is the part we updated
                 node_new = Node.from_dict(node.to_dict())
diff --git a/utils/globals.py b/utils/globals.py
index 098c67a..eb0bedd 100644
--- a/utils/globals.py
+++ b/utils/globals.py
@@ -1,2 +1,2 @@
 # the theshold to skip nodes of being included in an answer
-RETRIEVER_THRESHOLD = .4
\ No newline at end of file
+RETRIEVER_THRESHOLD = 0.4
diff --git a/utils/query_engine/dual_qdrant_retrieval_engine.py b/utils/query_engine/dual_qdrant_retrieval_engine.py
index d7cecd2..e3afbd3 100644
--- a/utils/query_engine/dual_qdrant_retrieval_engine.py
+++ b/utils/query_engine/dual_qdrant_retrieval_engine.py
@@ -187,7 +187,9 @@ def _process_basic_query(self, query_str: str) -> Response:
 
     def _process_summary_query(self, query_str: str) -> Response:
         summary_nodes = self.summary_retriever.retrieve(query_str)
-        summary_nodes_filtered = [node for node in summary_nodes if node.score >= RETRIEVER_THRESHOLD]
+        summary_nodes_filtered = [
+            node for node in summary_nodes if node.score >= RETRIEVER_THRESHOLD
+        ]
         utils = QdrantEngineUtils(
             metadata_date_key=self.metadata_date_key,
             metadata_date_format=self.metadata_date_format,
@@ -211,9 +213,13 @@ def _process_summary_query(self, query_str: str) -> Response:
         )
         raw_nodes = retriever.retrieve(query_str)
 
-        raw_nodes_filtered = [node for node in raw_nodes if node.score >= RETRIEVER_THRESHOLD]
+        raw_nodes_filtered = [
+            node for node in raw_nodes if node.score >= RETRIEVER_THRESHOLD
+        ]
 
-        context_str = utils.combine_nodes_for_prompt(summary_nodes_filtered, raw_nodes_filtered)
+        context_str = utils.combine_nodes_for_prompt(
+            summary_nodes_filtered, raw_nodes_filtered
+        )
         prompt = self.qa_prompt.format(context_str=context_str, query_str=query_str)
         response = self.llm.complete(prompt)
 
diff --git a/utils/query_engine/level_based_platform_query_engine.py b/utils/query_engine/level_based_platform_query_engine.py
index 8fc52e6..8f5e61a 100644
--- a/utils/query_engine/level_based_platform_query_engine.py
+++ b/utils/query_engine/level_based_platform_query_engine.py
@@ -47,9 +47,13 @@ def custom_query(self, query_str: str):
         similar_nodes = retriever.query_db(
             query=query_str, filters=self._filters, date_interval=self._d
         )
-        similar_nodes_filtered = [node for node in similar_nodes if node.score >= RETRIEVER_THRESHOLD]
+        similar_nodes_filtered = [
+            node for node in similar_nodes if node.score >= RETRIEVER_THRESHOLD
+        ]
 
-        context_str = self._prepare_context_str(similar_nodes_filtered, summary_nodes=None)
+        context_str = self._prepare_context_str(
+            similar_nodes_filtered, summary_nodes=None
+        )
         fmt_qa_prompt = qa_prompt.format(context_str=context_str, query_str=query_str)
         response = self.llm.complete(fmt_qa_prompt)
         logging.debug(f"fmt_qa_prompt:\n{fmt_qa_prompt}")